1. From the Indiana University School of Medicine, Indiana University Melvin and Bren Simon Comprehensive Cancer Center, and Regenstrief Institute, Indianapolis (T.F.I.); Exact Sciences, Madison, WI (K.P., J.Z., Z.D.G., M.C.O., S.S., J.G., P.J.L.); Boston Biostatistics Research Foundation, Framingham, MA (P.T.L.); Louisiana Research Center, Shreveport (H.A.); Great Lakes Gastroenterology Research, Mentor, OH (D.B.); Southwest Gastroenterology, Oak Lawn, IL (C.B.); and the Division of Gastroenterology...